Improvement in pumps



NITED STATES PATENT OFFICE.,

E. L. STAPLES, OF NASHVILLE, TENNESSEE, ASSIGNOR TO JAMES E. RUST,

A0E SAME PLAGE.

IMPROVEMENT IN PUMPS.

Specication forming part of Letters Patent No. 55,022, dated May 22, 1866.

To all whom t may concern:

Be it known that I, E. L. STAPLES, of Nashville, in the county of Davidson and State 0f Tennessee, have invented a new and useful Improvement in Pumps; and I do hereby declare that the following is a full, clear, and exact description thereot',`which will enable those skilled in the art to make and use the same, reference being had to the accompanying drawings, forming part of this specifica tion, in which- Figure l is an axial section of a pump made according to my invention, the plane of section heilig seen at w, Fig. 2. Fig. 2 is a crosssection on the line ai, Fig. l.

Similar letters oi' reference indicate corresponding parts.

The object ot' this invention is the construction of apump f'or use in deep wells, although it is applicable to other wells. It consists, among other things, in enlarging the upper part ot' the piston or plunger rod nearly to the size of the internal diameter of the cylinder, such enlarged part being connected to the piston by narrow bars, and its outer end working through a stuffing-box in the end ot' the cylinder. Said piston-rod is reduced in diameter beyond the stuftingbox, whence it is continued to the top ot' the well by a hollow rod of smaller diameter, whose end screws into the solid end of such enlargement. The water or other liquid pumped upis discharged from the end of the piston-rod, or it may be discharged from the side of the pump-cylinder, in which case the opening at the end of the piston-rod should be closed.

A designates a pump-cylinder, which is provided with brackets H K H K, for securing it in any position and at any desired height in a well, either above or below the surface ot' the water, the pump being capable ot' operation both as a submerged pump and in the ordinary way. The bottom of the cylinder is provided with the usual inlet-valve E, which is in communication with an inlet-pipe, J, which is continued down to the water or other liquid to be raised. The side of the cylinder, near its upper end, is provided with an eduction-pipe, I, through which the discharge of water may be made if desired.

B is the piston, having a valve, D, and being connected by two or more bars, C, to a hollow chamber, B', which is an enlargement ot' the piston. This chamber is open at its inner end next tothe piston, and its opposite or outer end, which protrudes through the top of the cylinder, is closed, excepting that it has an opening through it to receive a hollow pipe, G,.which forms the piston-rod of the pump. The chamber B may be said to form part of the piston ot' the pump, but it will be observed that its construction, it' it he considered part ot' the piston, is peculiar, inasmuch as there is an open space next above the piston-Valve and between it and the end of said chamber B'. The chamber B' is notequal in diameter to the interior ot' the cylinder, and consequently an annular space is left between them, into which the Water or other liquid may enter, and through'which it passes continually when the discharge is to be through the side eductionpipe, I. The chamber B works through a stud'- ing-box, F, placed at the upper end ot' the cylinder, and the length ot' said cylinder is such that when the piston is at its lowest p0- sition its outer or upper end will not quite reach the top of the stui-Iingbox. When the side pipe, I, is closed the discharge of liquid will be through the piston-rod G to the top of the well.

I claim as new and desire to secure by Lctters Patent- 1. Connecting to the piston B of a pump a chamber, B', open at its inner end and connected to the piston by bars or rods C, said v chamber having a hollow pistonaod screwed into its closed outer end, substantially as described.

2. In combination, the pum pcylinder A, the piston B, and the chamber B', connected with it, the hollow piston-rod G, and the side educl tion-pipe, I, substantially as shown.

' E. L. STAPLES.

Witnesses:

IsAAc PAUL, J. W. WRIGHT. 

